Over time, as their experience level and comfort level with the firewall increase, they may find it more convenient to use a CLI. Typically, novice users start by administering the firewall through a GUI. Whether it is through a CLI or through a GUI, the management of a firewall can range from the highly complex to the relatively easy. Webmin IPTables Rules Interface Interface Preference Webmin provides a method by which the firewall can be managed through a web browser interface, which is more convenient than an application that can only be viewed on an X Windows-enabled server. Firestarter provides a simple, easy-to-use interface for IPTables, as shown in Figure 11-4. Some are web based (such as Webmin), and some are applications running on the Linux system itself (such as Firestarter or FW-Builder). Not to be outdone, there are GUIs for Linux's IPTables firewall software. The information is presented in a more natural fashion to the end user in the form of graphics and graphs for performance. Figure 11-3 shows the PIX Device Manager screen. The PIX Device Manager (for PIX operating systems up to versions 6.3(5)), known as the Cisco Adaptive Security Device Manager in PIX version 7.0, is a Java applet that is downloaded from the PIX or ASA device and runs locally through the client browser. Some come with a preconfigured IP address and an administrative password to be used for access by the end user during initial configuration (such as Linksys or the PIX 501 and 506E series systems). Some firewalls are configured through a direct interface on the host, such as Symantec Norton Internet Security shown in Figure 11-1 and Figure 11-2, before the firewall is active. With larger scoped projects and less managed time I'd go with dhcp on router/fw but smaller gigs or someplace that will have someone to manage their shit I'd just run it all on same box.Of 4 Managing Firewalls with a GUIĪ GUI provides a more-user-friendly interface to configure the firewall. Is this 1 of 5000 clients that you'll be managing? or just soho setup? etc.īoth have their advantages and you just need to work out which one suits you more. The main thing is that, you need to work out which will be easier and more time efficient for your use as well as who will be actually managing the dhcp and dns services. The tools for DHCP reservation are much more robust on Windows Server DHCP than on most firewalls.ĭepends which fw, but yeah most features are available but are more time consuming and harder to implement and most still don't allow for scope reservation prestaging. ? you can just use a single dhcp service with multiple scopes as long as iphelpers are in place for necessary vlans Ith a separate DHCP server, you'll need to poke holes in the firewall to allow another VLAN to communicate with the DHCP server. With servers, you either stay in the same family (Windows vs Linux) or export settings to a CSV/TXT for manual input on the new platform.Ĭan you add any other points to the above? Any points you disagree with or would like to build on? Firewalls often don't allow for exports of settings in a usable format during upgrade time.The tools for DHCP reservation are much more robust on Windows Server DHCP than on most firewalls.By having DNS and DHCP on the same box, it simplifies troubleshooting and allows for multiple DHCP servers to sync together.Firewalls, for the most part, automate this process. With a separate DHCP server, you'll need to poke holes in the firewall to allow another VLAN to communicate with the DHCP server. When running multiple VLANs, you have a central place to control all the networks.However, you leave DNS on your Domain Controller so that AD can update entries as required. If the firewall is rebooted, you don't have internet anyways. By putting the DHCP on the firewall, you'll always have DHCP services unless the firewall is rebooted.However, I'd still love to hear from the enterprise crowd on best practices and dos and don'ts. Keep in mind, most of our networks are sub-50 users. Had a discussion last week with a few people about whether it makes more sense to leave DHCP on the firewall or to have your domain controller run DHCP. Would love some input from the community on this one.
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